Improved folding convertible chair



iinied Startet @anni @Mina WILLIAM B. KIMBALL, OF PE'IERBOROUGH, 'NEWHAMPSHIRE.

Letters Patent No. 101,472, lated April 5, 1870.

IMPROVED FOLDING CONVERTIBLE CHAIR.

The Schedule referred to in these Letters Patent and making part of thelama To all whom 'it may conce/m The object of this invention is toconstruct a-chair which may be folded np into a small span, and beconverted from an ordinary rigid or stationary-seated chair to arocking-chair, and vice versa.

It consists in the construction and arrangement of parts, as hereinaftermore fully described.

In the accompanying drawing- Figure 1 represents a side elevation of thechair. Figure 2 is a view of the under side of the seat looking up fromthe line a: a: of fig. 1I

Figure 3 is a. sectional detail view of the pedestal showing thedovetail-groove by means of which the seat is connected with thepedestal, and' the manner in which the legs are hinged thereto.

Similar letters of reference indicate corresponding parts.

A'is the seat, which is removably connected with the pedestal B by meansof a dovetail-groove, C, in the ends ofthe pedestal, as seen in fig. 3,and a dovetail-plate, D, connected with the seat by the strap E, whichstrap is pivoted to the bottom of the seat, so that the plate D and seatmay he made to rock back and forth.

F and G are springs which are made to act upon the dovetail-plate D whenthe plate is unlocked, so that the seat may rock.

His akey which hangs down from and turns in the bot-tom with aslot whichreceives the edge of the plate D, as `seen in iig. 1, and acts,'\vhenthus turned, as a stop to the rocking motion ofthe seat.

When H is turned back the action of the springs are I brought to bear,and the chair is convert-ed into a rockin g-chair.

I represents the back of the chair hinged to the seat by the stationaryplates J, so that it will fold down onto the seat, the 'pivotal pointbeing at I The back acts as a lever when pressed in the di rection ofthe arrow, K being the fulcrum, and the 1nite1- ]'oint,seen in dot-tedlines, the point of resistance.'

L represents the legs, four (more or less,) in number, pivoted orjointed to the bottom of the pedestal 'in radial slotsfas seen in thedrawing.

The top of each leg has a lip, O, projecting npward, as seen in tig. 3.

N is a sliding ring on the pedestal, which slips down over the lips Oand holds the legs expanded, as seen in fig. 1. ,l

When this ring is raised the legs are released, and may be foldedtogether so as to take np but little space.

The dovetail-plate D is readily slipped from the pedestal by turningron-nd the little holding-finger P,

so that the seat and back may be packed separately` from the pedestaland legs if desired. y

Vlhe dovetail-plate U, forming the top of the pedestal, may be connectedwith the pedestal by a central screw, so as to make the seat adjustableas to height as well as position, without moving the legs, like theordinary pivot-chair.

The advantages of this arrangement are many, and must be obvious to all.

- Having ths described my invention,

I claim as new and desire to secure by Letters Patent- 1. The springs Fand G and the key H, in combination with a chair, by-rneans of which therigid' seat is made a rocking seat, substantially as de scribed.

2. The ring N and lips O, by means of which the legs are held expanded,substantially as described.

' WM. B. KIMBALL.

Witnesses:

EzRA M. SMITH, ALBERT S. SCOTT.

